KANSAS CITY - Frontier and United airlines have scrubbed flights between Denver International Airport and Kansas City and St. Louis. Hundreds of flights in and out of Denver and Colorado Springs have been canceled as another blizzard paralyzed much of the state for the second straight week. United and Frontier canceled 513 flights Thursday and Friday. For more information, log onto to Kansas City International: http://www.flykci.com or Lambert-St. Louis International: http://www.lambert-stlouis.com or Denver International Airport: http://www.flydenver.com.